Bright Low G Ukulele Strings. The first thing you will notice about Oasis Fluorocarbon Ukulele strings is their length (63"). This length is at least twice as long as the length needed to string a concert, soprano or tenor ukulele. Cut the string in half with a scissors and you have two sets of strings. Use one set now and save one for later, or use the second set on another ukulele. Working with a leading ukulele internet forum Oasis have developed two types of strings: warm or bright. Either type is available with either a high or low G string. The high G string is fluorocarbon while the low G is nylon core with copper/silver wrapped wire. The string specifications are listed below: UKE 8001 bright with low G A/1st .0215", E/2nd .027", C/3rd .030", G/4th .029"